[PATCH 09/22] selftests/damon/drgn_dump_damon_status: dump damos->migrate_dests

From: SeongJae Park
Date: Sun Jul 20 2025 - 13:18:36 EST


drgn_dump_damon_status.py is a script for dumping DAMON internal status
in json format. It is being used for seeing if DAMON parameters that
are set using _damon_sysfs.py are actually passed to DAMON in the kernel
space. It is, however, not dumping full DAMON internal status, and it
makes increasing test coverage difficult. Add damos->migrate_dests
dumping for more tests.

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
.../selftests/damon/drgn_dump_damon_status.py | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/tools/testing/selftests/damon/drgn_dump_damon_status.py b/tools/testing/selftests/damon/drgn_dump_damon_status.py
index 333a0d0c4bff..8db081f965f5 100755
--- a/tools/testing/selftests/damon/drgn_dump_damon_status.py
+++ b/tools/testing/selftests/damon/drgn_dump_damon_status.py
@@ -117,6 +117,19 @@ def damos_watermarks_to_dict(watermarks):
['high', int], ['mid', int], ['low', int],
])

+def damos_migrate_dests_to_dict(dests):
+ nr_dests = int(dests.nr_dests)
+ node_id_arr = []
+ weight_arr = []
+ for i in range(nr_dests):
+ node_id_arr.append(int(dests.node_id_arr[i]))
+ weight_arr.append(int(dests.weight_arr[i]))
+ return {
+ 'node_id_arr': node_id_arr,
+ 'weight_arr': weight_arr,
+ 'nr_dests': nr_dests,
+ }
+
def scheme_to_dict(scheme):
return to_dict(scheme, [
['pattern', damos_access_pattern_to_dict],
@@ -125,6 +138,7 @@ def scheme_to_dict(scheme):
['quota', damos_quota_to_dict],
['wmarks', damos_watermarks_to_dict],
['target_nid', int],
+ ['migrate_dests', damos_migrate_dests_to_dict],
])

def schemes_to_list(schemes):
--
2.39.5